BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  open a port in Windows...          BorlandTalk.com Forum Index -> C++ Builder (Native API) View previous topic :: View next topic   Author Message Malm32 Guest Posted: Wed Feb 08, 2006 3:00 pm    Post subject: open a port in Windows... Is there any way to open a port in windows or find out which ports are open. I want to know that so as to use my program as a server. I believe that many programs like "windows messender" or skype take advantage of this action. Back to top Remy Lebeau (TeamB) Guest Posted: Wed Feb 08, 2006 8:05 pm    Post subject: Re: open a port in Windows... "Malm32" <antreas7 (AT) bluebottle (DOT) com> wrote in message news:43e9f382$1 (AT) newsgroups (DOT) borland.com... Quote: Is there any way to open a port in windows I assume that you are referring to a socket port? If so, then simply create a new socket via the socket() function, bind it to a local IP/port via the bind() function, listen on it via the listen() function, and read from via the recv() function. Refer to the Win32 API documentation for more details. Quote: or find out which ports are open. The easiest way to do that is to loop through all possible port numbers (1-65535) attempting to bind to each one and see which ones succeed or fail. Alternatively, there are OS hooks available that can retreive the information more accurately. Refer to http://www.sysinternals.com/Utilities/TcpView.html for details. Quote: I want to know that so as to use my program as a server. Just pick any port number and use it in your code. Best would be if you let the user tell your program which port number to use dynamically. If the socket fails when you try to open it, you can tell your user about it. Gambit Back to top Malm32 Guest Posted: Thu Feb 09, 2006 8:03 am    Post subject: Re: open a port in Windows... what i meant was if there is something like a priviledge as SE_SHUTDOWN_NAME that enables you to shutdown windows but what i need is something different that will enable my program to be able to receive information on a single port that can be opened. i know how to check if a port is already bound but what i need is to bypass the windows firewall prior to XPSP2 that asks the user to unblock the program. The versions before that do not ask at all. Is there any way to bypass it from code? Just like many other programs do it? Apart from that i have seen that many programs detect even if there is a upnp firewall enabled and find that specific ports that either the user has opened manually or open some themselves!!! Do you know of any library that enables this feature? Remy Lebeau (TeamB) wrote: Quote: "Malm32" <antreas7 (AT) bluebottle (DOT) com> wrote in message news:43e9f382$1 (AT) newsgroups (DOT) borland.com... Is there any way to open a port in windows I assume that you are referring to a socket port? If so, then simply create a new socket via the socket() function, bind it to a local IP/port via the bind() function, listen on it via the listen() function, and read from via the recv() function. Refer to the Win32 API documentation for more details. or find out which ports are open. The easiest way to do that is to loop through all possible port numbers (1-65535) attempting to bind to each one and see which ones succeed or fail. Alternatively, there are OS hooks available that can retreive the information more accurately. Refer to http://www.sysinternals.com/Utilities/TcpView.html for details. I want to know that so as to use my program as a server. Just pick any port number and use it in your code. Best would be if you let the user tell your program which port number to use dynamically. If the socket fails when you try to open it, you can tell your user about it. Gambit Back to top Remy Lebeau (TeamB) Guest Posted: Thu Feb 09, 2006 9:03 am    Post subject: Re: open a port in Windows... "Malm32" <antreas7 (AT) bluebottle (DOT) com> wrote in message news:43eae988$1 (AT) newsgroups (DOT) borland.com... Quote: what i meant was if there is something like a priviledge as SE_SHUTDOWN_NAME that enables you to shutdown windows but what i need is something different that will enable my program to be able to receive information on a single port that can be opened. Again, what you are looking for is called a socket, and sockets is not subject to security privileges. Quote: what i need is to bypass the windows firewall prior to XPSP2 that asks the user to unblock the program. You cannot bypass the firewall. That defeats the purpose of having a running firewall in the first place. Quote: The versions before that do not ask at all. Of course not, because they do not have a built-in firewall like XP does. Quote: Is there any way to bypass it from code? No. Quote: Just like many other programs do it? Other programs DO NOT bypass the firewall. Quote: Apart from that i have seen that many programs detect even if there is a upnp firewall enabled and find that specific ports that either the user has opened manually or open some themselves!!! That is a completely different issue. UPnP is designed (amongst other things) to allow programs to interact with firewalls. They are not bypassing the firewall at all - they are cooperating with it. Quote: Do you know of any library that enables this feature? Overview of Network Address Translation (NAT) in Windows XP http://www.microsoft.com/technet/prodtechnol/winxppro/deploy/nattrnsv.mspx Universal Plug and Play (UPnP) Client Support http://www.microsoft.com/technet/itsolutions/network/plan/insidenet/sohonet/upnpsup.mspx Internet Connection Sharing and Internet Connection Firewall http://msdn.microsoft.com/library/en-us/ics/ics/portal.asp Windows Firewall Reference http://msdn.microsoft.com/library/en-us/ics/ics/windows_firewall_reference.asp UPnP APIs http://msdn.microsoft.com/library/en-us/upnp/upnp/universal_plug_and_play_start_page.asp Gambit Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> C++ Builder (Native API) All times are GMT Page 1 of 1   Jump to: Select a forum C++ Builder Newsgroups----------------C++ BuilderC++ Builder (ActiveX)C++ Builder (Announcements)C++ Builder (Command Line Tools)C++ Builder DatabasesC++ Builder Databases (ADO)C++ Builder Databases (Desktop)C++ Builder Databases (InterBase Express)C++ Builder Databases (Multi-Tier)C++ Builder Databases (SQL Servers)C++ Builder (Graphics)C++ Builder (IDE)C++ Builder (Internet)C++ Builder (Internet Socket)C++ Builder (Internet Web)C++ Builder (Jobs)C++ Builder (Language)C++ Builder (Language C++)C++ Builder (Compatibility with MFC)C++ Builder (Native API)C++ Builder (Non-Technical)C++ Builder (Students)C++ Builder (Third Party Tools)C++ Builder (Upgrade)C++ Builder (VCL)C++ Builder (VCL Components Usage)C++ Builder (VCL Components Development)C++ Builder (VCL Usage)C++ Builder (WinAPI)C++ Builder Installation Delphi Newsgroups----------------Delphi (General)Delphi ActiveX Controls UsageDelphi ActiveX Controls DevelopmentDelphi As400Delphi DatabasesDelphi Databases (ADO)Delphi Databases (dbExpress)Delphi Databases (Desktop)Delphi Databases (InterBase Express)Delphi Databases (Multi-Tier)Delphi Databases (SQL Servers)Delphi DeploymentDelphi GraphicsDelphi IDEDelphi InternationalizationDelphi InternetDelphi Internet Isapi-WebBrokerDelphi Internet WebSnapDelphi Internet WinsockDelphi JobsDelphi Language BASMDelphi Language ObjectPascalDelphi Model Driven Architecture (General)Delphi Model Driven Architecture (Third Party)Delphi MultimediaDelphi Native APIDelphi Non-TechnicalDelphi ObjectPascalDelphi OLE AutomationDelphi OO designDelphi OpenToolsAPIDelphi Reporting-ChartingDelphi RTLDelphi StudentsDelphi TeamSourceDelphi Thirdparty ToolsDelphi Thirdparty Tools (General)Delphi Thirdparty Tools (IntraWeb)Delphi Thirdparty Tools (RaveReports)Delphi UpgradeDelphi VCLDelphi VCL ComponentsDelphi VCL Components UsingDelphi VCL Components WritingDelphi WebServices SOAPDelphi WinAPIDelphi XMLDelphi Installationcomp.lang.pascal.delphi.components.misccomp.lang.pascal.delphi.components.usagecomp.lang.pascal.delphi.components.writingcomp.lang.pascal.delphi.databasescomp.lang.pascal.delphi.misccomp.sources.delphi JBuilder Newsgroups----------------JBuilderJBuilder AnnouncementsJBuilder Applet IssuesJBuilder As400JBuilder CompilerJBuilder CORBA/RMIJBuilder DatabasesJBuilder DB SwingJBuilder DebuggerJBuilder DeploymentJBuilder DocumentationJBuilder EnterpriseJBuilder HandheldJBuilder IDEJBuilder JavaJBuilder JavaAPIJBuilder Java LanguageJBuilder Java SwingJBuilder Java BeansJBuilder Java Beans UsageJBuilder Java Beans DevelopmentJBuilder JBCLJBuilder JDataStoreJBuilder JobsJBuilder LinuxJBuilder MacintoshJBuilder & MobileSetJBuilder MultiLingual AppsJBuilder Non-TechnicalJBuilder OpenToolsJBuilder Servlets (JSP)JBuilder StudentsJBuilder Team DevelopmentJBuilder Thirdparty ToolsJBuilder UpgradeJBuilder Installation InterBase Newsgroups----------------InterBaseInterBase Bug DiscussionInterBase GeneralInterBase IBConsoleInterBase OpenSourceInterBase ReplicationInterBase SQLInterBase ThirdpartyInterBase Installation Miscellaneous Borland Newsgroups----------------AppCenterAppServerEnteraVisiBroker  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.